Grundfos CM3-5 Booster Pump for S2 / S4 Systems

Automatically maintains the chlorine levels and eliminates problems associated with periods of very high or low chlorine levels.
Consistently maintained sanitizer levels in pool water will prevent the growth of all common algae.
Salt water feels better on the body compared to standard chlorinated water.
Plumbed directly in-line with the pool equipment, typically after the heater.
Easy to read timer.
Super chlorination function.
Energy saving winter mode.
Pump protection.
Self clean salt cell.
Battery back up.
Power pack and cell sold separately.